Plate 30. Fourth-Stage Lobster. 



Figure 42. Bight first maxilliped from inside, M=:68. There has occurred, 

 since the third stage, a slight change in the shape of the exopodite and endopodite, 

 together with a modification in the epipodite. The tegumenlal glands are seen 

 in the basipodite. 



